Aerosol adhesive and canister-based aerosol adhesive system

Abstract

A cannister-based, high solids, low and non-VOC aerosol adhesive and canister based system. The aerosol adhesive typically includes a high solids polymeric base, a hexane or cyclohexane and acetone solvent mixture and a compressed gas dissolved within the solvent. The compressed gas typically includes carbon dioxide, nitrogen, nitrous oxide and air. The aerosol adhesive is adapted to be filled into a cannister including a hose connected to the canister and a spray gun connected to the hose. The system typically includes high solids with a high viscosity. Thus the canister typically maintains high pressures up to 350 psi, but typically at 260 psi while maintaining 325 psi at 130° F., to deliver effective spray patterns.

1. An aerosol adhesive canister system, comprising:
 a gas cylinder canister; 
 a hose connected to said canister; 
 a spray gun connected to said hose; 
 a hydrocarbon propellant held within said canister; and 
 an aerosol adhesive held within said canister, said aerosol adhesive comprising:
 a solvent mixture selected to have volatility characteristics for producing a specific spray pattern; 
 a polymeric base in said solvent mixture; and 
 a compressed gas dissolved in said solvent mixture. 
 
 
     
     
       2. The system as claimed in  claim 1  wherein said compressed gas is pressurized in said canister in a range of about 150-350 psi. 
     
     
       3. The system as claimed in  claim 1  wherein said compressed gas is pressurized in said canister to about 200 psi. 
     
     
       4. The system as claimed in  claim 1  wherein said compressed gas is pressurized in said canister in a range of about 160-200 psi. 
     
     
       5. The system as claimed in  claim 1  wherein the relative solids concentration of said aerosol adhesive is about 20-50% by weight. 
     
     
       6. The system as claimed in  claim 5  wherein the relative solvent concentration of said aerosol adhesive is about 50-80% by weight. 
     
     
       7. The system as claimed in  claim 1  wherein the relative solids concentration of said aerosol adhesive is 28% by weight and the relative solvent concentration of said aerosol adhesive is about 72% by weight. 
     
     
       8. The system as claimed in  claim 1  wherein said solvent mixture includes about 50% acetone and 50% hexane by volume. 
     
     
       9. The system as claimed in  claim 1  wherein said solvent mixture includes about 50% acetone and 50% cyclohexane by volume. 
     
     
       10. The system as claimed in  claim 1  wherein said solvent mixture includes about 5% acetone and 95% hexane by volume. 
     
     
       11. The system as claimed in  claim 1  wherein said solvent mixture includes about 5% acetone and 95% cyclohexane by volume. 
     
     
       12. The system as claimed in  claim 1 , wherein said solvent mixture includes about 100% hexane. 
     
     
       13. The system as claimed in  claim 1 , wherein said solvent mixture includes about 100% cyclohexane. 
     
     
       14. The system as claimed in  claim 1  wherein the hydrocarbon propellant is chosen from the group consisting of: propane, isobutane and a propane/isobutane blend. 
     
     
       15. The system of  claim 1 , wherein said polymeric base is selected from the group consisting of one or more styrene block polymer, one or more styrene butadiene polymer, and neoprene. 
     
     
       16. The system of  claim 1 , wherein said polymeric base is high solids concentrate. 
     
     
       17. The system of  claim 16 , wherein said high solids concentrate is greater than or equal to 20% of the blend. 
     
     
       18. The system of  claim 1 , wherein said compressed gas is selected from the group consisting of carbon dioxide, nitrous oxide, nitrogen, and air. 
     
     
       19. The system of  claim 1 , wherein said status of said polymeric base relative to said solvent mixture is selected from the group consisting of dissolved in said solvent mixture and suspended in said solvent mixture. 
     
     
       20. The system of  claim 1 , wherein a concentration of said polymeric base is approximately 20% of said aerosol adhesive and wherein said aerosol adhesive has a viscosity of approximately 1000 centipoise. 
     
     
       21. The system of  claim 1 , wherein said volatility characteristics of said solvent mixture support a plurality of drying time constraints, according to application requirements, and wherein delivery of a consistent application pressure by said canister is facilitated by said dissolved, compressed gas. 
     
     
       22. The system of  claim 21 , wherein said solvent mixture is non-chlorinated and comprises hexane, and wherein said application requires a minimized drying time. 
     
     
       23. The system of  claim 21 , wherein said solvent mixture is non-chlorinated and comprises cyclohexane, and wherein said application requires a maximized drying time. 
     
     
       24. The system of  claim 1 , wherein said solvent mixture comprises acetone. 
     
     
       25. The system of  claim 1 , wherein said polymeric base is dissolved in said solvent mixture with said compressed gas. 
     
     
       26. The system of  claim 1 , wherein said compressed gas is selected from the group consisting of carbon dioxide, nitrogen, nitrous oxide, and air. 
     
     
       27. The system of  claim 1 , wherein said aerosol adhesive is a high solids solution propelled by compressed gases. 
     
     
       28. A spray adhesive canister system, comprising:
 a combination of compressed inert gas and liquefied propellant usable together in said canister, wherein the relative volume and concentration of liquefied propellant is minimal relative to the relative volume and concentration of compressed inert gas, 
 wherein said combination and relative concentrations of compressed inert gas and liquefied propellant enables said spray adhesive canister system to maintain a consistent spray delivery pressure and a consistent spray coarseness irrespective of the volume of spray adhesive remaining to be dispensed from said canister, and wherein said spray adhesive is a high solids, high viscosity, low solvent and low voc blend.